The IPCC states, "While the radiative forcing due to greenhouse gases may be determined to a reasonably high degree of accuracy... the uncertainties relating to aerosol radiative forcings remain large, and rely to a large extent on the estimates from global modelling studies that are difficult to verify at the present time."
If you look at the website/chart provided, it categorizes aerosols and their radiative effect.
2007-03-15 03:19:33
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answer #1
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answered by justin_at_shr 3
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Aerosol can hvae both a positive radiative forcing or negative radiatve forcing depending on the its chemical nature. Aerosols influence the radiative balance of the Earth through scattering of radiation (direct effect) and by serving as a nuclei for cloud droplet and ice particle formation, thereby modifying cloud reflectance, absorption and precipitation formation (indirect effect).
2007-03-16 19:59:40
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answer #2
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answered by nadia a 2
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Most aerosol propellants are CFC's (Chlorofluorocarbons). When these chemicals reach the upper atmosphere they react with UV light and break down o3 (ozone) into o2 (free oxygen) thus depleting the ozone layer and allowing more infra red and UV radiation to reach the Earth's surface.
Modern propellants and refrigerants are HFC's (hydrofluorocarbons) and don't have the same ozone depleting effects.
2007-03-15 01:08:29
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answer #3
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answered by Jules G 6
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CFC's in the US and many other other countries are not legal in aerosol's.Therefore the effects are minor.
http://www.nocfcs.org/environment/home.htm
2007-03-15 01:30:31
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answer #4
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answered by Gene 7
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NONE The environmentalist blamed CFC and now it is pollution,next it might be the drinking water,what else.
2007-03-15 03:26:51
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answer #5
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answered by JOHNNIE B 7
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cfc. it thins out the ozone layer. a layer that keeps off harmful uv rays from entering earth atmosphere.
2007-03-15 00:44:29
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answer #6
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answered by aridaconcept 1
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mostly CFC's which erode the ozone layer letting in more UV radiation and heat
2007-03-15 00:34:05
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answer #7
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answered by Anonymous
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